Badole S.,Bidhan Chandra Krishi Viswavidyalaya |
Datta A.,ICAR CSSRI |
Basak N.,ICAR CSSRI |
Seth A.,University of Calcutta |
And 2 more authors.
Communications in Soil Science and Plant Analysis | Year: 2015
A pot experiment was conducted to study the influence of liming on changes in different forms of acidity in relation to soil properties. Thirty-six surface (0–15 cm deep) soil samples were collected from different soil orders, namely Entisols, Inceptisols, Alfisols, and Entisols of coastal saline zone of West Bengal, India, and incubated for 21 days with three doses of lime [i.e., no lime (L0), half lime (L1/2), and full lime (L1)]. Results of analysis of soil showed that there were significant increases in pH in water (pHw) and pH in 0.02 M calcium chloride (CaCl2) (pHCa) (1.3 and 1.5 units) and decrease in total acidity, hydrolytic acidity, exchange acidity, electrostatically bound aluminium (EBAl3+), and electrostatically bound hydrogen (EBH+) upon liming being from 1.53 to 0.57, 1.40 to 0.54, 0.13 to 0.03, 0.08 to 0.01, and 0.06 to 0.02 cmol (p+) kg−1, respectively. The decrease in values of all the forms of acidity was greater in L1 than in L1/2 treatment under Entisols of the terai zone, followed by Entisols of coastal saline zone, Inceptisols, and Alfisols. The forms of acidity showed significant positive correlation with each other but negative correlation with pHw and pHCa, except for EBH+. © 2015, Taylor & Francis. All rights reserved.
Dixit A.K.,Scientist Agronomy |
Dixit A.K.,Indian Grassland And Fodder Research Institute |
Kumar S.,Indian Grassland And Fodder Research Institute |
Rai A.K.,ICAR CSSRI |
And 3 more authors.
Indian Journal of Agronomy | Year: 2014
A field experiment was conducted at Jhansi during the winter season (rabi) of 2009–10 to rainy season (kharif) of 2012 to study the impact of tillage practices and irrigation management on chickpea (Cicer arietinum L.) and their carry-over effects on succeeding fodder sorghum [Sorghum bicolour (L.) Moench]. Reduced tillage recorded 1.74 t/ha grain yield of chickpea and was on a par with conventional tillage. However, reduced tillage (57.7%) and zero tillage (57.4%) recorded significantly higher harvest index than conventional tillage (55.2%). Similarly, application of 2 irrigations to chickpea recorded higher grain yield (1.90 t/ha) and system productivity in terms of chickpea-equivalent yield (4.00 t/ha) but application of only 1 irrigation recorded higher irrigation water-use efficiency (295 kg grain /ha-cm). Significantly higher plant height, plant population, grains per pod, 100-seed weight, weeds count and weed dry matter were also recorded in irrigated plots than unirrigated control. Higher system productivity in terms of chickpea-equivalent yield (CEY) was recorded under reduced tillage (3.85 t/ha) and conventional tillage (3.90 t/ha) than zero tillage. Reduced tillage and 2 irrigations in chickpea recorded higher net returns i.e. 33.1 × 103 and 34.6 × 103/ha and benefit: cost ratio i.e. 0.85 and 0.87, from whole system. After 3 years, the bulk density of 15–30 cm soil depths was lower in zero tillage (1.34 Mg/m3) than conventional (1.40 Mg/ m3) and reduced tillage (1.37 Mg/m3). Similarly, significantly higher values of total organic carbon (10.31 g/kg), electrical conductivity (0.20 dS/m), available N (260.1 kg/ha) and available K (197.7 kg/ha) were recorded under zero tillage. Application of 2 irrigations recorded lower electrical conductivity (0.152 dS/m) and available N (237.0 kg/ha) and higher available K (189.8 kg/ha) status. © 2014, Indian Society of Agronomy. All rights reserved.